21101122110112 is nontrivially palindromic in base 10.
Almost surely, 221101122110112 is an apocalyptic number.
21101122110112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 21101122110112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24543913089024).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21101122110112 is a wasteful number, since it uses less digits than its factorization.
21101122110112 is an evil number, because the sum of its binary digits is even.
The spelling of 21101122110112 in words is "twenty-one trillion, one hundred one billion, one hundred twenty-two million, one hundred ten thousand, one hundred twelve".